I come from an old school of driving. I used to, when driving a manual transmission, shift when I thought the sound was just right. Not to many revs and not to few revs. I also adjusted carburetors this way.

Now when driving a DCT in Manual, either with the pedals or stick, should I continue this way or shift when I reach a certain number of RPM's? I know I should not go into the red but was wondering what your opinion would be.